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Merge branch 'for-linus' of git://git.kernel.dk/linux-block

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Pull block fixes from Jens Axboe:
 "A collection of fixes for the nvme over fabrics code"

* 'for-linus' of git://git.kernel.dk/linux-block:
  nvme-rdma: Get rid of redundant defines
  nvme-rdma: Get rid of duplicate variable
  nvme: fabrics drivers don't need the nvme-pci driver
  nvme-fabrics: get a reference when reusing a nvme_host structure
  nvme-fabrics: change NQN UUID to big-endian format
  nvme-loop: set sqsize to 0-based value, per spec
  nvme-rdma: fix sqsize/hsqsize per spec
  fabrics: define admin sqsize min default, per spec
  nvmet-rdma: +1 to *queue_size from hsqsize/hrqsize
  nvmet-rdma: Fix use after free
  nvme-rdma: initialize ret to zero to avoid returning garbage
This commit is contained in:
Linus Torvalds 2016-09-02 21:05:38 -07:00
commit 0141af184a
8 changed files with 54 additions and 34 deletions
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2
drivers/nvme/host/Kconfig
View File

@ -31,7 +31,7 @@ config NVME_FABRICS
config NVME_RDMA
tristate "NVM Express over Fabrics RDMA host driver"
depends on INFINIBAND
depends on BLK_DEV_NVME
select NVME_CORE
select NVME_FABRICS
select SG_POOL
help

23
drivers/nvme/host/fabrics.c
View File

@ -47,8 +47,10 @@ static struct nvmf_host *nvmf_host_add(const char *hostnqn)
mutex_lock(&nvmf_hosts_mutex);
host = __nvmf_host_find(hostnqn);
if (host)
if (host) {
kref_get(&host->ref);
goto out_unlock;
}
host = kmalloc(sizeof(*host), GFP_KERNEL);
if (!host)
@ -56,7 +58,7 @@ static struct nvmf_host *nvmf_host_add(const char *hostnqn)
kref_init(&host->ref);
memcpy(host->nqn, hostnqn, NVMF_NQN_SIZE);
uuid_le_gen(&host->id);
uuid_be_gen(&host->id);
list_add_tail(&host->list, &nvmf_hosts);
out_unlock:
@ -73,9 +75,9 @@ static struct nvmf_host *nvmf_host_default(void)
return NULL;
kref_init(&host->ref);
uuid_le_gen(&host->id);
uuid_be_gen(&host->id);
snprintf(host->nqn, NVMF_NQN_SIZE,
"nqn.2014-08.org.nvmexpress:NVMf:uuid:%pUl", &host->id);
"nqn.2014-08.org.nvmexpress:NVMf:uuid:%pUb", &host->id);
mutex_lock(&nvmf_hosts_mutex);
list_add_tail(&host->list, &nvmf_hosts);
@ -363,7 +365,14 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl)
cmd.connect.opcode = nvme_fabrics_command;
cmd.connect.fctype = nvme_fabrics_type_connect;
cmd.connect.qid = 0;
cmd.connect.sqsize = cpu_to_le16(ctrl->sqsize);
/*
* fabrics spec sets a minimum of depth 32 for admin queue,
* so set the queue with this depth always until
* justification otherwise.
*/
cmd.connect.sqsize = cpu_to_le16(NVMF_AQ_DEPTH - 1);
/*
* Set keep-alive timeout in seconds granularity (ms * 1000)
* and add a grace period for controller kato enforcement
@ -375,7 +384,7 @@ int nvmf_connect_admin_queue(struct nvme_ctrl *ctrl)
if (!data)
return -ENOMEM;
memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_le));
memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_be));
data->cntlid = cpu_to_le16(0xffff);
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE);
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE);
@ -434,7 +443,7 @@ int nvmf_connect_io_queue(struct nvme_ctrl *ctrl, u16 qid)
if (!data)
return -ENOMEM;
memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_le));
memcpy(&data->hostid, &ctrl->opts->host->id, sizeof(uuid_be));
data->cntlid = cpu_to_le16(ctrl->cntlid);
strncpy(data->subsysnqn, ctrl->opts->subsysnqn, NVMF_NQN_SIZE);
strncpy(data->hostnqn, ctrl->opts->host->nqn, NVMF_NQN_SIZE);

2
drivers/nvme/host/fabrics.h
View File

@ -34,7 +34,7 @@ struct nvmf_host {
struct kref ref;
struct list_head list;
char nqn[NVMF_NQN_SIZE];
uuid_le id;
uuid_be id;
};
/**

46
drivers/nvme/host/rdma.c
View File

@ -43,10 +43,6 @@
#define NVME_RDMA_MAX_INLINE_SEGMENTS 1
#define NVME_RDMA_MAX_PAGES_PER_MR 512
#define NVME_RDMA_DEF_RECONNECT_DELAY 20
/*
* We handle AEN commands ourselves and don't even let the
* block layer know about them.
@ -77,7 +73,6 @@ struct nvme_rdma_request {
u32 num_sge;
int nents;
bool inline_data;
bool need_inval;
struct ib_reg_wr reg_wr;
struct ib_cqe reg_cqe;
struct nvme_rdma_queue *queue;
@ -286,7 +281,7 @@ static int nvme_rdma_reinit_request(void *data, struct request *rq)
struct nvme_rdma_request *req = blk_mq_rq_to_pdu(rq);
int ret = 0;
if (!req->need_inval)
if (!req->mr->need_inval)
goto out;
ib_dereg_mr(req->mr);
@ -298,7 +293,7 @@ static int nvme_rdma_reinit_request(void *data, struct request *rq)
req->mr = NULL;
}
req->need_inval = false;
req->mr->need_inval = false;
out:
return ret;
@ -645,7 +640,8 @@ static int nvme_rdma_init_io_queues(struct nvme_rdma_ctrl *ctrl)
int i, ret;
for (i = 1; i < ctrl->queue_count; i++) {
ret = nvme_rdma_init_queue(ctrl, i, ctrl->ctrl.sqsize);
ret = nvme_rdma_init_queue(ctrl, i,
ctrl->ctrl.opts->queue_size);
if (ret) {
dev_info(ctrl->ctrl.device,
"failed to initialize i/o queue: %d\n", ret);
@ -849,7 +845,7 @@ static void nvme_rdma_unmap_data(struct nvme_rdma_queue *queue,
if (!blk_rq_bytes(rq))
return;
if (req->need_inval) {
if (req->mr->need_inval) {
res = nvme_rdma_inv_rkey(queue, req);
if (res < 0) {
dev_err(ctrl->ctrl.device,
@ -935,7 +931,7 @@ static int nvme_rdma_map_sg_fr(struct nvme_rdma_queue *queue,
IB_ACCESS_REMOTE_READ |
IB_ACCESS_REMOTE_WRITE;
req->need_inval = true;
req->mr->need_inval = true;
sg->addr = cpu_to_le64(req->mr->iova);
put_unaligned_le24(req->mr->length, sg->length);
@ -958,7 +954,7 @@ static int nvme_rdma_map_data(struct nvme_rdma_queue *queue,
req->num_sge = 1;
req->inline_data = false;
req->need_inval = false;
req->mr->need_inval = false;
c->common.flags |= NVME_CMD_SGL_METABUF;
@ -1145,7 +1141,7 @@ static int nvme_rdma_process_nvme_rsp(struct nvme_rdma_queue *queue,
if ((wc->wc_flags & IB_WC_WITH_INVALIDATE) &&
wc->ex.invalidate_rkey == req->mr->rkey)
req->need_inval = false;
req->mr->need_inval = false;
blk_mq_complete_request(rq, status);
@ -1278,8 +1274,22 @@ static int nvme_rdma_route_resolved(struct nvme_rdma_queue *queue)
priv.recfmt = cpu_to_le16(NVME_RDMA_CM_FMT_1_0);
priv.qid = cpu_to_le16(nvme_rdma_queue_idx(queue));
priv.hrqsize = cpu_to_le16(queue->queue_size);
priv.hsqsize = cpu_to_le16(queue->queue_size);
/*
* set the admin queue depth to the minimum size
* specified by the Fabrics standard.
*/
if (priv.qid == 0) {
priv.hrqsize = cpu_to_le16(NVMF_AQ_DEPTH);
priv.hsqsize = cpu_to_le16(NVMF_AQ_DEPTH - 1);
} else {
/*
* current interpretation of the fabrics spec
* is at minimum you make hrqsize sqsize+1, or a
* 1's based representation of sqsize.
*/
priv.hrqsize = cpu_to_le16(queue->queue_size);
priv.hsqsize = cpu_to_le16(queue->ctrl->ctrl.sqsize);
}
ret = rdma_connect(queue->cm_id, &param);
if (ret) {
@ -1319,7 +1329,7 @@ out_destroy_queue_ib:
static int nvme_rdma_device_unplug(struct nvme_rdma_queue *queue)
{
struct nvme_rdma_ctrl *ctrl = queue->ctrl;
int ret;
int ret = 0;
/* Own the controller deletion */
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_DELETING))
@ -1461,7 +1471,7 @@ static int nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx,
if (rq->cmd_type == REQ_TYPE_FS && req_op(rq) == REQ_OP_FLUSH)
flush = true;
ret = nvme_rdma_post_send(queue, sqe, req->sge, req->num_sge,
req->need_inval ? &req->reg_wr.wr : NULL, flush);
req->mr->need_inval ? &req->reg_wr.wr : NULL, flush);
if (ret) {
nvme_rdma_unmap_data(queue, rq);
goto err;
@ -1816,7 +1826,7 @@ static int nvme_rdma_create_io_queues(struct nvme_rdma_ctrl *ctrl)
memset(&ctrl->tag_set, 0, sizeof(ctrl->tag_set));
ctrl->tag_set.ops = &nvme_rdma_mq_ops;
ctrl->tag_set.queue_depth = ctrl->ctrl.sqsize;
ctrl->tag_set.queue_depth = ctrl->ctrl.opts->queue_size;
ctrl->tag_set.reserved_tags = 1; /* fabric connect */
ctrl->tag_set.numa_node = NUMA_NO_NODE;
ctrl->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
@ -1914,7 +1924,7 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev,
spin_lock_init(&ctrl->lock);
ctrl->queue_count = opts->nr_io_queues + 1; /* +1 for admin queue */
ctrl->ctrl.sqsize = opts->queue_size;
ctrl->ctrl.sqsize = opts->queue_size - 1;
ctrl->ctrl.kato = opts->kato;
ret = -ENOMEM;

2
drivers/nvme/target/Kconfig
View File

@ -15,8 +15,8 @@ config NVME_TARGET
config NVME_TARGET_LOOP
tristate "NVMe loopback device support"
depends on BLK_DEV_NVME
depends on NVME_TARGET
select NVME_CORE
select NVME_FABRICS
select SG_POOL
help

4
drivers/nvme/target/loop.c
View File

@ -556,7 +556,7 @@ static int nvme_loop_create_io_queues(struct nvme_loop_ctrl *ctrl)
memset(&ctrl->tag_set, 0, sizeof(ctrl->tag_set));
ctrl->tag_set.ops = &nvme_loop_mq_ops;
ctrl->tag_set.queue_depth = ctrl->ctrl.sqsize;
ctrl->tag_set.queue_depth = ctrl->ctrl.opts->queue_size;
ctrl->tag_set.reserved_tags = 1; /* fabric connect */
ctrl->tag_set.numa_node = NUMA_NO_NODE;
ctrl->tag_set.flags = BLK_MQ_F_SHOULD_MERGE;
@ -620,7 +620,7 @@ static struct nvme_ctrl *nvme_loop_create_ctrl(struct device *dev,
ret = -ENOMEM;
ctrl->ctrl.sqsize = opts->queue_size;
ctrl->ctrl.sqsize = opts->queue_size - 1;
ctrl->ctrl.kato = opts->kato;
ctrl->queues = kcalloc(opts->nr_io_queues + 1, sizeof(*ctrl->queues),

7
drivers/nvme/target/rdma.c
View File

@ -978,10 +978,11 @@ static void nvmet_rdma_release_queue_work(struct work_struct *w)
container_of(w, struct nvmet_rdma_queue, release_work);
struct rdma_cm_id *cm_id = queue->cm_id;
struct nvmet_rdma_device *dev = queue->dev;
enum nvmet_rdma_queue_state state = queue->state;
nvmet_rdma_free_queue(queue);
if (queue->state != NVMET_RDMA_IN_DEVICE_REMOVAL)
if (state != NVMET_RDMA_IN_DEVICE_REMOVAL)
rdma_destroy_id(cm_id);
kref_put(&dev->ref, nvmet_rdma_free_dev);
@ -1003,10 +1004,10 @@ nvmet_rdma_parse_cm_connect_req(struct rdma_conn_param *conn,
queue->host_qid = le16_to_cpu(req->qid);
/*
* req->hsqsize corresponds to our recv queue size
* req->hsqsize corresponds to our recv queue size plus 1
* req->hrqsize corresponds to our send queue size
*/
queue->recv_queue_size = le16_to_cpu(req->hsqsize);
queue->recv_queue_size = le16_to_cpu(req->hsqsize) + 1;
queue->send_queue_size = le16_to_cpu(req->hrqsize);
if (!queue->host_qid && queue->recv_queue_size > NVMF_AQ_DEPTH)

2
include/linux/nvme.h
View File

@ -794,7 +794,7 @@ struct nvmf_connect_command {
};
struct nvmf_connect_data {
uuid_le hostid;
uuid_be hostid;
__le16 cntlid;
char resv4[238];
char subsysnqn[NVMF_NQN_FIELD_LEN];